Brush retainer



- 1,505,155 G. ANDERSON ET AL v Nov. l2 1926.

BRUSH RETAlNER Filed NOV. 8. 1924 ,a M M ad/ n v Patented Nov. 2, 1926.

UNITED STATES PATENT OFFICE.

GUSTAVE ANDERSON AND OSCAR N. JOHNSON, or BERLIN, NEW HAMPSHIRE; sArD JOHNSON ASSIGNOR 'ro IRVING W. roes, 0E .OASOADE NEW HAMPsErnE.

BRUSH RETAINER.

Application filed November 8, 1924. Serial No. 748,674. i

This invention aims to provide novel means whereby a plurality of annular brushes may be heldsecurely on a shaft, for rotation with the shaft. Y

It is within the province of the disclosure to improve generally and to enhance the utility of device of that Sort to which the invention appertains.

Although a preferred form of the invention has been shown in the drawings, it will be understood that a mechanic, working within the scope -of what is claimed, may make such changes as his skill may dictate, without departing from the spirit of the invention.

In the accompanying drawings z-Figure 1 shows in section, a device constructed in accordance with the invention;`and Figure 2 is an end elevation wherein parts are broken away, the shaft appearing in section.

The numeral l designates a shaft mounted for rotation. On the shaft 1, a first abutment 2 is mounted, the abutment comprising a hub 3 and a flange 4 outstanding from the hub. The abutment 2 is held on the shaft 1 through the instrumentality of a set screw 5, threaded into the hub 3 and engaging the shaft 1.

The numeral 6 designates a second abutment, in the form of a collar held on the shaft 1 by a set screw 7 threaded into the abutment 6 and engaging the shaft 1. In its inner end, the abutment 6 is supplied with a recess 8. The numeral 9 designates a clamp mounted to rotate on the shaft 1 and to` move longitudinally ofthe shaft. The clamp 9 compares a hub 10 and an outstanding flange 11. The hub 10 has a reduced eXtension 12, threaded at 14` into the recess 8 of the abutment 6. The hub 1() of the clamp 9 is supplied with seats 15, adapted to cooperate with a spanner wrench, or like tool, to secure rotation of the clamp 9.

Outer annular brushes 16 are mounted on the shaft 1, one brush being engaged by the flange 1l of the clamp 9, and the other brush being engaged by the flange 4 of the abutment 2. The flanges 11 and 4 have inwardly projecting lugs 17 received removably in seats 18 fashioned in the Outer surfaces of the brushes 16. Between the brushes 16 may be located any desired number of intermediate annular brushes 19.

In practical operation, the abutment 2 is fixed on the shaft 1 by the set screw 5. The brushes 16 and 19 are mounted on the shaft 1, as shown in Figure 1. The extension 12 of the clamp 9 is threaded into the recess 8 of the abutment 6 as far as it will go, the parts 9 and `6 being placed on the shaft 1, and being held thereon by the set screw 7 the set screw retaining the abutmentv 6 againstrotation on the shaft 1, the clamp 10, however, being rotatable with respect to the shaft and with respect to the abutment 6. The brushes 16 are engaged with the flanges 4 and 11, as shown in Figure 1, the

klugs 17 being received in the seats 18. Through the instrumentality of a Spanner wrench, or the like, cooperating with the seats 15 of the clamp 9, the clamp may be rotated, and, when the clamp is rotated, it

will be advanced, because the extension 12 of the clamp is threaded into the abutment G as indicated at 14. When the clamp 9 is advanced, as aforesaid, the brushes 16 and 19, obviously will be bound tightly together, between the flanges 4 and 11.

Having thus described the invention, what is claimed is 1. In a device of the class described, a shaft, a lirst abutment secured to the shaft against rotation thereon, a second abutment secured to theshaft against rotation thereon, a clamp rotatable on the shaft and having threaded connection with the second abutment and brushes on the shaft andbound between the first abutment and the clamp, the brushes being connected, detachably, to the first abutment and to the clamp by lug and seat elements.

.2. 1n a device of the class described, a shaft, a first abutment on the shaft, a second abutment on the vshaft and provided in its inner endL with a recess, a clamp rotatable on the shaft and provided with a reduced eX- tension threaded into the recess, and cleaning means on the shaft and bound between the clamp and the first abutment.

ln testimony that we claim the foregoing as our own, we have hereto affixed our signatures.

GUSTAVE ANDERSON. OSCAR N. JOHNSON. 

